linux-kernel - Re: [RFC PATCH 00/17][request for stable 3.10 inclusion] x86/nmi: Print all cpu stacks from NMI safely

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Message-ID: <20150514095504.3076310c@gandalf.local.home>
Date:	Thu, 14 May 2015 09:55:04 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Wang Long <long.wanglong@...wei.com>
Cc:	<jkosina@...e.cz>, <gregkh@...uxfoundation.org>,
	<stable@...r.kernel.org>, <wanglong@...qinren.net>,
	<peifeiyue@...wei.com>, <linux-kernel@...r.kernel.org>,
	<morgan.wang@...wei.com>, <paulmck@...ux.vnet.ibm.com>,
	<pmladek@...e.cz>, <dzickus@...hat.com>, <x86@...nel.org>,
	<sasha.levin@...cle.com>
Subject: Re: [RFC PATCH 00/17][request for stable 3.10 inclusion] x86/nmi:
 Print all cpu stacks from NMI safely

On Thu, 14 May 2015 11:34:47 +0000
Wang Long <long.wanglong@...wei.com> wrote:

> The patch 1-13 backport the "seq_buf" infrastructures. in detail, patch 1, 2
> and 6 only backport "seq_buf" related code.
> 

Ah, so basically you just backported the seq_buf.c code without
modifying the trace_seq code. That's a good approach. I don't have much
time to look at these but I'll try to skim them to see if I find
anything broken.

I may pull all of them into a test branch and run my tests to make sure
they don't break anything else.

-- Steve


>  arch/x86/kernel/apic/hw_nmi.c |  86 +++++++++-
>  include/linux/percpu.h        |   4 +
>  include/linux/printk.h        |   2 +
>  include/linux/seq_buf.h       | 136 ++++++++++++++++
>  kernel/printk.c               |  41 +++--
>  lib/Makefile                  |   2 +-
>  lib/seq_buf.c                 | 359 ++++++++++++++++++++++++++++++++++++++++++
>  7 files changed, 617 insertions(+), 13 deletions(-)
>  create mode 100644 include/linux/seq_buf.h
>  create mode 100644 lib/seq_buf.c
> 

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